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Journal ArticleDOI

A Real-Time QRS Detection Algorithm

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TLDR
A real-time algorithm that reliably recognizes QRS complexes based upon digital analyses of slope, amplitude, and width of ECG signals and automatically adjusts thresholds and parameters periodically to adapt to such ECG changes as QRS morphology and heart rate.
Abstract
We have developed a real-time algorithm for detection of the QRS complexes of ECG signals. It reliably recognizes QRS complexes based upon digital analyses of slope, amplitude, and width. A special digital bandpass filter reduces false detections caused by the various types of interference present in ECG signals. This filtering permits use of low thresholds, thereby increasing detection sensitivity. The algorithm automatically adjusts thresholds and parameters periodically to adapt to such ECG changes as QRS morphology and heart rate. For the standard 24 h MIT/BIH arrhythmia database, this algorithm correctly detects 99.3 percent of the QRS complexes.

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Citations
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Proceedings ArticleDOI

Using independent component analysis to obtain feature space for reliable ECG Arrhythmia classification

TL;DR: An algorithm that uses independent component analysis (ICA) to improve the performance of ECG pattern recognition is proposed and results from training and validation of the MIT-BIH Arrhythmia database shows significantly improved performance.
Proceedings ArticleDOI

Wavelet-based denoising and beat detection of ECG signal

TL;DR: This paper proposed modifications to the existing Pan-Tompkins algorithm by introducing only one set of adaptive threshold computations to reduce the amount of data processing significantly and achieved an overall accuracy of 99.51%.
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Wireless portable electrocardiogram and a tri-axis accelerometer implementation and application on sleep activity monitoring.

TL;DR: Results show that sleep posture and posture change can be precisely detected via tri-axis accelerometer information, and there is no significant difference within subject data sets, but there are statistically significant differences among subjects, both for heart rate and for sleep posture distribution.
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Sympathetic activation and nitric oxide function in early hypertension

TL;DR: The results suggest that sympathetic activity plays a role in hypertension, and no evidence of impaired modulation by NO of vascular tone contributing to the early development of hypertension is found.
References
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Journal ArticleDOI

Software QRS detection in ambulatory monitoring--a review.

TL;DR: This review asserts that most one-channel QRS detectors described in the literature can be considered as having the same basic structure and a discussion of some of the current detection schemes is presented.
Journal ArticleDOI

Optimal QRS detector.

TL;DR: The problem of detecting the QRS complex in the presence of noise was analysed and an optimised threshold criterion based on FP/FN was developed.
Journal ArticleDOI

Automated High-Speed Analysis of Holter Tapes with Microcomputers

TL;DR: An automated Holtes scanning system based on two microcomputers that detects QRS complexes and measures the QRS durations using computations of first and second derivatives, and can process Holter tapes at 60 times real time and produce printed summaries and 24 h trend plots.
Journal ArticleDOI

Online digital filters for biological signals: some fast designs for a small computer.

TL;DR: The possibilities for extending the class of lowpass recursive digital filters to include high pass, bandpass, and bandstop filters are described, and experience with a PDP 11 computer has shown that these filters may be programmed simply using machine code, and that online operation at sampling rates up to about 8 kHz is possible.
Journal ArticleDOI

A robust-digital QRS-detection algorithm for arrhythmia monitoring

TL;DR: In this paper a new robust single lead QRS-detection algorithm is presented, allowing real-time applications and results are presented.
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